G4400 is 2 c 2 t and I3 6100, I3 7100, G4560, G4600, G4620 are 2c 4t. Any of this are far better than G4400.
I3 6100 is sure compatible with your mobo. The other require the F20 bios version. You can see the bios version with CPU-Z program.
Update the bios is a risky option. If you not familiar...